Fig. 4From: Indirect association and ranking hypotheses for literature based discoveryCo-occurrence Dataset PR Curve (zoomed in) This ROC curve shows the ability of each ranking method to distinguish between term pairs that newly co-occur in the post-cutoff dataset and those that co-occur in neither the pre- or post cut-off datasets.. To better distinguish between methods other than LTC, the maximum value on the Y-axis has been changedBack to article page